IMHE OpenIR  > Journal of Mountain Science  > Journal of Mountain Science-2013  > Vol10 No.5
Long-Term Impact of Extra Sediment on Notches and Incised Meanders in the Hoshe River, Taiwan
Su-Chin CHEN; Chun-Hung WU; Yi-Chiung CHAO; Pei-Yu SHIH
Corresponding AuthorYi-Chiung CHAO
2013-10
Source PublicationJournal of Mountain Science
Volume10Issue:5Pages:716-723
AbstractThe extra sediment load induced by typhoons and rainstorms in the Heshe River, Taiwan, are the principal reason for severe sediment-related disasters. The total sediment load during Typhoon Morakot in 2009 was 31 × 106 m3, accounting for 95% of the annual sediment discharge. Large amounts of sediment load entered the Hoshe River, causing the braiding index (BI) to increase. Subsequently, the BI became positively correlated with the channel width in the Hoshe River. The specific typhoon and rainstorm events decreased after Typhoon Morakot, the sediment input decreased, inducing the fluvial morphology of the braided river to develop into a meandering river. The extra sediment load induced the deposition depth to increase and produce a headward deposition in the main channel and its tributaries. In addition, the river bend and the topographical notch restrained the sediment from moving downstream and being stored locally, indirectly increasing the erosion density of the river banks from 2.5 to 10.5 times.
KeywordExtra Sediment Load River Morphology Braiding Index
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/6330
CollectionJournal of Mountain Science_Journal of Mountain Science-2013_Vol10 No.5
Corresponding AuthorYi-Chiung CHAO
Recommended Citation
GB/T 7714
Su-Chin CHEN,Chun-Hung WU,Yi-Chiung CHAO,et al. Long-Term Impact of Extra Sediment on Notches and Incised Meanders in the Hoshe River, Taiwan[J]. Journal of Mountain Science,2013,10(5):716-723.
APA Su-Chin CHEN,Chun-Hung WU,Yi-Chiung CHAO,&Pei-Yu SHIH.(2013).Long-Term Impact of Extra Sediment on Notches and Incised Meanders in the Hoshe River, Taiwan.Journal of Mountain Science,10(5),716-723.
MLA Su-Chin CHEN,et al."Long-Term Impact of Extra Sediment on Notches and Incised Meanders in the Hoshe River, Taiwan".Journal of Mountain Science 10.5(2013):716-723.
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